a small and wierd bug in the listing page

Hi guys
i seem to have found a small bug on the listing page .

Let say you go to https://familyfun.site/places/ and search for “hamborg” then you get this url : https://familyfun.site/?geodir_search=1&stype=gd_place&s=+&snear=hamborg&sgeo_lat=53.5510846&sgeo_lon=9.99368179999999

And from here if the user desides to change language on the page ( try to press the german flag in the menu ) you land on this page : https://familyfun.site/de/?s=+
Here there’s a page where attractions and blog posts are mixed ( i have never noticed this page before )

And the problem is also when you do it the other way around

Everything is updated on the site, and im using wpml for the multilingual website.

Have you seen this bug before, and do you know how to fix it, so if a user searches for eg hamborg on the english side and desides to change language it will show the same site but just in german

Thanks in advance

chrtistian